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Configuring the Maintenance Window

Updated on 2024-04-01 GMT+08:00

During a maintenance window, Huawei Cloud O&M personnel perform maintenance operations on the instance. To prevent service interruptions, set the maintenance window to off-peak hours.

The default maintenance window is 02:00–06:00 but you can change it if needed.

Precautions

  • Before maintenance is performed, DDS will send SMS and email notifications to the contact person you specified in the Huawei account.
  • During the maintenance window, the DB instance may be intermittently disconnected once or twice. Ensure that your applications can reconnect to the database if the connection is interrupted.
  • During DB instance maintenance, operations for service changes (such as upgrade and restart) are unavailable except account management, database management, and security group adding. When a DB instance is in maintenance, data access and query operations on the database are not affected.
  • Changing the maintenance window does not affect the execution of tasks that have been scheduled.
  • You can configure a maintenance window only for restarting a DB instance, changing an instance class, or upgrading the minor version of a DB instance.
  • You can cancel a scheduled task to be executed on the Task Center page.
  • The maintenance window cannot overlap the time window configured for backups. Otherwise, scheduled tasks may fail.
  • Tasks delivered near the end of the maintenance window may fail to be scanned. In this case, the execution is canceled.

Changing a Maintenance Window

  1. Log in to the management console.
  2. Click in the upper left corner and select a region and a project.
  3. Click in the upper left corner of the page and choose Databases > Document Database Service.
  4. On the Instances page, click the instance name. In the DB Information area on the Basic Information page, click Change in the Maintenance Window field.

    Figure 1 Changing the maintenance window

  5. In the displayed dialog box, select an interval and a maintenance window, and click OK.

    Figure 2 Changing the maintenance window

Canceling a Scheduled Task

  1. Log in to the management console.
  2. Click in the upper left corner and select a region and a project.
  3. Click in the upper left corner of the page and choose Databases > Document Database Service.
  4. On the Task Center page, locate the specified task and click Cancel in the Operation column.

    Figure 3 Canceling a task

  5. View the result.

    On the Task Center page, you can view the result. After the task is cancelled, its status changes to Cancelled.

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